Carbon DioxideCarbonIsotopesIsotope LabelingCarbon IsotopesOxygen IsotopesNitrogen IsotopesNitrogen DioxideCarbon MonoxidePartial PressureSulfur DioxideCapnographyInsufflationAtmosphereNanotubes, CarbonOxygenRespirationHypercapniaPulmonary Gas ExchangeBlood Gas Monitoring, TranscutaneousChromatography, Supercritical FluidBlood Gas AnalysisZinc IsotopesLasers, GasCarbon SequestrationPneumoperitoneum, ArtificialSulfur IsotopesTidal VolumeEcosystemDeuteriumCarbon Monoxide PoisoningDry IceMethaneHydrogen-Ion ConcentrationBiomassIron IsotopesAcidosis, RespiratoryBicarbonatesNitrogenOxygen ConsumptionGasesCarbon FootprintPhotosynthesisHydrogenThorium DioxideSoilSeawaterMass SpectrometryTreesAirTemperatureRespiratory Dead SpaceEcological Systems, ClosedCarbonic AnhydrasesGreenhouse EffectCarbonatesWaterAcetatesOxidation-ReductionCarbon RadioisotopesStrontium IsotopesCarbon TetrachlorideKineticsBacteriaOceans and SeasCarbon CycleTime FactorsHypocapniaMolecular Sequence DataRadioisotope Dilution TechniqueHyperventilationEmbolism, AirOxidesHypoventilationGeologic SedimentsAutotrophic ProcessesAir PollutantsPulmonary VentilationCarbon DisulfideAnesthesia, InhalationCerebrovascular CirculationNitrous OxideAnaerobiosisTitaniumBiodiversitySeasonsBiodegradation, EnvironmentalModels, BiologicalAcid-Base EquilibriumChemoreceptor CellsPlant LeavesCulture MediaRespiratory InsufficiencyExtraterrestrial EnvironmentRespiration, ArtificialRespiratory MechanicsArgonSilicon DioxideMarsGeological Phenomena